Car-truck bolster.



PATBNTED MAY 26, 1903.

E. CLIFF.

GA-B. TRUCK BOLSTER.

Arr mouron rum) JULY 2a, 1902.

K0 MODEL.

INVENTOR 'ATTORNEY W WESSES:

'm: mmms PETERS cu. mom-Una. wasnmcnou. n c.

UNITED STATES Patented May 26, 1903.

PATENT OFFICE.

EDWARD-CLIFF, OF NEWARK, NEW JERSEY, ASSIGNOR 'lO VOSE AND CLIFF MANUFACTURING COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

I CAR-TRUCK BOLSTER.

SPECIFICATION forming part of Letters Patent No. 728,868, dated May 26, 1903.

Application filed July 23, 1902. Serial No. 116,647. (No model.)

To all whom it may concern.-

Be it known that I, EDWARD CLIFF, a citizen of the United States, and a'resident of Newark, in the county of Essex and State of New Jersey, have invented certain new and efficient car-truck bolster, preferably of the .vation of same.

laterally-movable or floating type, having the usual center bearing-plate and provided in its end portions with vertical recesses inclosing vertically-disposed springs upon which are caps projecting slightly above the upper level of the bolster to receive the impact of the car-body, said springs being of durable character and substantially inclosed by said recesses andcaps and said caps having on their upper ends tramways for the rollers of side bearings.

The invention will be fully understood from the detailed description hereinafter presented, reference being had to the accompanying drawings, in which Figure l is a top View of a car-truck bolster constructed in accordance with and embodying my invention. Fig. 2 is a side ele- Fig. 3 is an' enlarged vertical longitudinal section of a portion of same on the dotted line 3 3 of Fig. 1. Fig. 4 is an enlarged end view, partly broken away, of same; and Fig. 5 is a side elevation of one end of a modified form of the bolster.

In the drawings, designates the bolster, which will preferably be in one integral hollow casting and equipped with the center.

bearing-plate 11, having a central, aperture surrounded by a sleeve 12 to receive the usual king-bolt, the sleeve 12 being integral with the sides of the bolster through suitable Webs (Indicated by dotted lines in Figs. 1 and 2.) In its end portions the bolster 10is formed with the deep vertical recesses 14, surrounded by solid walls 15 and extending transversely of the bolster, and within these recesses 14 are placed the substantial coiled springs 16 to normally projectslightly above the upper level of the bolster and receive the caps 17, which inclose the upper portions of the springs 16 and have their side walls fitting and guided vertically within the Walls of the recesses 14, the depth of the said recesses being such that the lower edges of the caps 17 shall not strike the flooring thereof, it being the intention that the caps 17 shall at all times rest and bear upon the springs 16. The recesses 14 are at their upper ends surrounded by a vertical bordering-flange 18,

I which projects slightly above the upper level of the bolster, and at the base of the said recesses'14 are formed openings 19 for the escape of any dust or other foreign matter which might gain'entrance to the said recesses.

Upon the upper surfaces of the caps 17 are formed the tramways 20 for the roller-bearings 21, and while I do not limit the present invention to any special form of track or tramway for the upper ends of the cap 17 I recommend that a tramway 20 of the character shown be employed and that the rollers 21 be connected by a frame 22, so that said rollers may maintain a proper relation to each a other. The tramway 20 is elevated above the surface of the caps 17 and is of proper width to pass between the end flanges of the rollers 21. The tramway 20 is at its ends formed with the upwardly-projecting portions 23 to form stops for the rollers 21, and at its central portion the said tramway projects upwardly intermediate the said rollers. The body-bolster on the car will be provided with a tramway corresponding exactly with the tramway 20, but facing downwardly to engage the upper sides of the rollers 21.

The ends of the bolster will also be formed with the vertical ribs 24 for contact with the usual columns on car-trucks to limit the lateral thrust of the bolster and to guide the bolster in its vertical movements when said bolster is supported at its ends upon the usual springs.

The recesses 14, springs 16, and caps 17 may be at either the inner side, as shown in Fig. 1, or at the outer side, as shown in Fig. 5, of the vertical ribs 24, it being preferable in some cases to locate the springs and caps at the inner side of said ribs and preferable in other cases to have the said springs and caps at the extreme ends of the bolster.

I prefer to separate the lower ends of the springs 16 at each end of the bolster and for this purpose provide a web 25, which will afford strength to the Walls of the recesses 14 and serve to keep the lower ends of the springs 16 from contact with each other.

The bolster 10 is a complete self-contained article of manufacture carrying the center plate 11 and, within the recesses 14, the springs 16 and caps 17, the latter afiording on their upper ends the tramways or seats fortheantifriction sidebearings. Theflanges 18, surrounding the upper edges of the recesses 14, will aid in preventing water and dust from entering said recesses, and the apertnrcs 19 will permit the escape from said recesses of any foreign matter which may gain access to the same.

The bolster shown is applicable to usual car-trucks and may be supported at its ends upon springs or rollers, as usual.

What I claim as my invention, and desire to secure by Letters Patent, is--- 1. As a new article of manufacture, the

bolster having the center bearing 11 and in its end portions the recesses 14, combined with the springs 16 in said recesses, and the caps 17 on said springs and having on their upper ends the tramways 20 for the roller side bearings, said tramways 20 having the raised central portion and end upwardly-projecting portions 23; substantially as shown and described.

2. As a new article of manufacture, the integral hollow cast bolster in one continuous piece and having the top, side and bottom walls, saidbolster at its center having the center bearing 11 and the vertical open sleeve 12 extending between and integral with said top and bottoin walls, and at its ends the vertical recesses 14 and surrounding walls 15 which extend from the top to the bottom of the bolster and are integral therewith, combined with the springs 16 within said recesses, and the caps 17 on said springs and adapted to said walls 15; substantially as set forth.

3. As a new article of manufacture, the integral hollow cast bolster in one continuous piece and having the top, side and bottom walls, said bolster at its center having the center bearing 11 and the vertical open sleeve 12 extending between and integral with said top and bottom walls, and at its ends the vertical transversely-elongated recesses 14 and surrounding walls 15 which extend from the top to the bottom of the bolster and are integral therewith, combined with the springs 16 set side by side within each of said recesses, and the transversely-elongated caps 17 on said springs and adapted to said walls 15; substantially as set forth.

Signed at New York, in the county of New York and State of New York, this 22d day of July, A. D. 1902.

EDWARD CLIFF.

Witnesses:

CHAS. G. GILL, ANNA V. BRODERICK. 

